Laser device and method for generating adjustable series pulse by square wave pumping to adjust Q for multiple times

A technology of laser device and pump device, which is applied in the field of laser to achieve the effect of ensuring stability

Active Publication Date: 2016-04-20
北京镭宝光电技术有限公司 +1
View PDF5 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a laser device and method for generating adjustable string pul

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laser device and method for generating adjustable series pulse by square wave pumping to adjust Q for multiple times
  • Laser device and method for generating adjustable series pulse by square wave pumping to adjust Q for multiple times

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0031] refer to figure 1 , a square wave pumps a laser device that is Q-switched multiple times to generate an adjustable series of pulses, and a total reflection mirror 1, a Q-switched crystal 2, and a quarter-wave plate 3 are sequentially arranged coaxially in the laser beam propagation direction of the laser device , polarizer 4, pumping device 5 and output mirror 6.

[0032] The device also includes a Q-switching circuit 7 connected to the Q-switching crystal 2, and the Q-switching circuit 7 is arranged close to the propagating direction of the laser beam. The side of the total reflection mirror 1 facing the Q-switching device is coated with a total reflection film.

[0033] The pumping device includes a pumping source and a laser crystal, the pumping source includes a pumping cavity and a pulsed xenon lamp or a laser diode fixed in the pumping cavity, and the laser crystal is fixed on the pumping cavity , the axial direction of the laser crystal is the same as the propa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a laser device and method for generating adjustable series pulse by square wave pumping to adjust Q for multiple times, relating to the technical field of laser. The device comprises a Q adjusting unit, and a total reflection mirror, a Q adjusting crystal, a quarter-wave plate, a polaroid, a pumping device and an output mirror which are coaxially and sequentially arranged in the laser beam transmission direction of the device. The method comprises the following steps: enabling a pumping source to start working, and accumulating high energy level electrons, wherein laser pulse output does not occur; when the accumulation of the high energy level electrons reaches a preset value, starting to apply voltage on the Q adjusting crystal, forming laser oscillation in a resonant cavity, and enabling the accumulated high energy level electrons to transit to a low energy level and release photons, thus outputting a first laser pulse; by starting from the output of the first laser pulse, outputting one laser pulse at every time interval t to form a laser pulse string until the pumping source stops working. By adopting the laser device and method, adjustable series pulse laser is generated by using long pulse square wave pumping to adjust Q for multiple times, and output parameter change of a laser and damage to optical devices of the laser are avoided.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a laser device and method for generating adjustable series pulses by multiple times of Q-switching by square wave pumping. Background technique [0002] Laser train pulses containing a certain number of laser pulses are widely used in the fields of plasma diagnosis and pulsed laser illumination. These two applications require laser pulse intervals to be adjustable between 100 microseconds and 300 microseconds However, currently used lasers use a one-to-one correspondence between pump pulses and Q-switched pulses to generate laser train pulses. This method has a defect: if the number of pulses and pulse intervals in the laser train pulses are adjusted, the It will change the output parameters of the laser, and even cause damage to the internal optical components of the laser. Contents of the invention [0003] The object of the present invention is to provide a laser device and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01S3/11H01S3/13H01S3/094
CPCH01S3/094076H01S3/11H01S3/13
Inventor 张放臧庆胡爱兰
Owner 北京镭宝光电技术有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap